Sophia,
Thank you for your reply. Do you know of any examples of a 3 parameter IRT
model using GLLAMM?
Thank you again,
Howard
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of
[email protected]
Sent: Monday, May 05, 2003 12:32 PM
To: [email protected]
Subject: Re: st: GLLAMM
Howard,
Yes, it is.
You first have to use gllamm
to evaluate the likelihood for your data
using the published parameters
(use the 'from()' and 'eval' options).
Then you can use the 'predict' command to
obtain the scores (values of theta) for
the units.
The first step (evaluation of the likelihood)
is necessary so that the predict command
understands what model the predictions should
be based on.
Best regards,
Sophia
I am interested in using GLLAMM to analyze data from an IRT model. Is it
possible to input publish parameters and calculate theta using GLLAMM?
Thank you in advance,
Howard
Howard B. Degenholtz, PhD
Associate Director of Research,
Center for Bioethics and Health Law
Assistant Professor,
Department of Health Policy and Management
Graduate School of Public Health
University of Pittsburgh
3708 5th Ave. Suite 300
Pittsburgh, PA 15213
Voice: (412) 647-5860
Fax: (412) 647-5877
Email: [email protected]
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